1
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Ji L, Riese S, Schmiedel A, Holzapfel M, Fest M, Nitsch J, Curchod BFE, Friedrich A, Wu L, Al Mamari HH, Hammer S, Pflaum J, Fox MA, Tozer DJ, Finze M, Lambert C, Marder TB. Thermodynamic equilibrium between locally excited and charge-transfer states through thermally activated charge transfer in 1-(pyren-2'-yl)- o-carborane. Chem Sci 2022; 13:5205-5219. [PMID: 35655553 PMCID: PMC9093154 DOI: 10.1039/d1sc06867a] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 03/24/2022] [Indexed: 02/02/2023] Open
Abstract
Reversible conversion between excited-states plays an important role in many photophysical phenomena. Using 1-(pyren-2'-yl)-o-carborane as a model, we studied the photoinduced reversible charge-transfer (CT) process and the thermodynamic equilibrium between the locally-excited (LE) state and CT state, by combining steady state, time-resolved, and temperature-dependent fluorescence spectroscopy, fs- and ns-transient absorption, and DFT and LR-TDDFT calculations. Our results show that the energy gaps and energy barriers between the LE, CT, and a non-emissive 'mixed' state of 1-(pyren-2'-yl)-o-carborane are very small, and all three excited states are accessible at room temperature. The internal-conversion and reverse internal-conversion between LE and CT states are significantly faster than the radiative decay, and the two states have the same lifetimes and are in thermodynamic equilibrium.
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Affiliation(s)
- Lei Ji
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), Northwestern Polytechnical University 127 West Youyi Road Xi'an Shaanxi China .,Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Stefan Riese
- Institut für Organische Chemie, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Alexander Schmiedel
- Institut für Organische Chemie, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Marco Holzapfel
- Institut für Organische Chemie, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Maximillian Fest
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Jörn Nitsch
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Basile F E Curchod
- Department of Chemistry, University of Durham South Road Durham DH1 3LE UK
| | - Alexandra Friedrich
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Lin Wu
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), Northwestern Polytechnical University 127 West Youyi Road Xi'an Shaanxi China
| | - Hamad H Al Mamari
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Department of Chemistry, College of Science, Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Sebastian Hammer
- Experimentelle Physik VI, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Jens Pflaum
- Experimentelle Physik VI, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Mark A Fox
- Department of Chemistry, University of Durham South Road Durham DH1 3LE UK
| | - David J Tozer
- Department of Chemistry, University of Durham South Road Durham DH1 3LE UK
| | - Maik Finze
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Christoph Lambert
- Institut für Organische Chemie, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Todd B Marder
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
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2
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Sinha S, Kelemen Z, Hümpfner E, Ratera I, Malval JP, Jurado JP, Viñas C, Teixidor F, Núñez R. o-Carborane-based fluorophores as efficient luminescent systems both as solids and as water-dispersible nanoparticles. Chem Commun (Camb) 2022; 58:4016-4019. [PMID: 35266927 DOI: 10.1039/d1cc07211k] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A set of o-carborane-appended π-conjugated fluorophores and their light-emitting properties in the solid state are reported. The aggregation-induced emission enhancement (AIEE) exhibited for one of the fluorenyl derivatives paved the way to successfully preparing o-carborane-containing organic nanoparticles (NPs) homogeneously dispersed in aqueous media that maintain their luminescence properties. Notably, NPs processed as thin films also show high fluorescence efficiency, suggesting potential optical and optoelectronic applications.
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Affiliation(s)
- Sohini Sinha
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus U.A.B., 08193, Bellaterra, Barcelona, Spain.
| | - Zsolt Kelemen
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Mũegyetem Rkp 3, H-1111 Budapest, Hungary
| | - Evelyn Hümpfner
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Mũegyetem Rkp 3, H-1111 Budapest, Hungary
| | - Imma Ratera
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus U.A.B., 08193, Bellaterra, Barcelona, Spain. .,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Jean-Pierre Malval
- Université de Haute-Alsace, Institut de Science des Matériaux de Mulhouse (CNRS-UMR7361), 15 rue Jean Starcky BP 2488, 68057 Mulhouse, France
| | - José Piers Jurado
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus U.A.B., 08193, Bellaterra, Barcelona, Spain.
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus U.A.B., 08193, Bellaterra, Barcelona, Spain.
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus U.A.B., 08193, Bellaterra, Barcelona, Spain.
| | - Rosario Núñez
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus U.A.B., 08193, Bellaterra, Barcelona, Spain.
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3
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Zhao Z, Zhang H, Lam JWY, Tang BZ. Aggregationsinduzierte Emission: Einblicke auf Aggregatebene. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916729] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Zheng Zhao
- Department of ChemistryDepartment of Chemical and Biological EngineeringInstitute for Advanced StudyHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong 999077 China
- HKUST-Shenzhen Research Institute No. 9 Yuexing 1st Rd, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Haoke Zhang
- Department of ChemistryDepartment of Chemical and Biological EngineeringInstitute for Advanced StudyHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong 999077 China
- HKUST-Shenzhen Research Institute No. 9 Yuexing 1st Rd, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Jacky W. Y. Lam
- Department of ChemistryDepartment of Chemical and Biological EngineeringInstitute for Advanced StudyHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong 999077 China
- HKUST-Shenzhen Research Institute No. 9 Yuexing 1st Rd, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Ben Zhong Tang
- Department of ChemistryDepartment of Chemical and Biological EngineeringInstitute for Advanced StudyHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong 999077 China
- HKUST-Shenzhen Research Institute No. 9 Yuexing 1st Rd, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
- Center for Aggregation-Induced EmissionState Key Laboratory of Luminescent Materials and DevicesSCUT-HKUST Joint Research InstituteSouth China University of Technology, Tianhe Qu Guangzhou 510640 China
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4
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Zhao Z, Zhang H, Lam JWY, Tang BZ. Aggregation-Induced Emission: New Vistas at the Aggregate Level. Angew Chem Int Ed Engl 2020; 59:9888-9907. [PMID: 32048428 DOI: 10.1002/anie.201916729] [Citation(s) in RCA: 503] [Impact Index Per Article: 125.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Indexed: 12/13/2022]
Abstract
Aggregation-induced emission (AIE) describes a photophysical phenomenon in which molecular aggregates exhibit stronger emission than the single molecules. Over the course of the last 20 years, AIE research has made great strides in material development, mechanistic study and high-tech applications. The achievements of AIE research demonstrate that molecular aggregates show many properties and functions that are absent in molecular species. In this review, we summarize the advances in the field of AIE and its related areas. We specifically focus on the new properties of materials attained by molecular aggregates beyond the microscopic molecular level. We hope this review will inspire more research into molecular ensembles at and beyond the meso level and lead to the significant progress in material and biological science.
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Affiliation(s)
- Zheng Zhao
- Department of Chemistry, Department of Chemical and Biological Engineering, Institute for Advanced Study, Hong Kong Branch of Chinese National Engineering Research Center, for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China.,HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st Rd, South Area, Hi-tech Park, Nanshan, Shenzhen, 518057, China
| | - Haoke Zhang
- Department of Chemistry, Department of Chemical and Biological Engineering, Institute for Advanced Study, Hong Kong Branch of Chinese National Engineering Research Center, for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China.,HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st Rd, South Area, Hi-tech Park, Nanshan, Shenzhen, 518057, China
| | - Jacky W Y Lam
- Department of Chemistry, Department of Chemical and Biological Engineering, Institute for Advanced Study, Hong Kong Branch of Chinese National Engineering Research Center, for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China.,HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st Rd, South Area, Hi-tech Park, Nanshan, Shenzhen, 518057, China
| | - Ben Zhong Tang
- Department of Chemistry, Department of Chemical and Biological Engineering, Institute for Advanced Study, Hong Kong Branch of Chinese National Engineering Research Center, for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China.,HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st Rd, South Area, Hi-tech Park, Nanshan, Shenzhen, 518057, China.,Center for Aggregation-Induced Emission, State Key Laboratory of Luminescent Materials and Devices, SCUT-HKUST Joint Research Institute, South China University of Technology, Tianhe Qu, Guangzhou, 510640, China
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5
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Recent Progress in the Development of Solid‐State Luminescent
o
‐Carboranes with Stimuli Responsivity. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916666] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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6
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Ochi J, Tanaka K, Chujo Y. Recent Progress in the Development of Solid-State Luminescent o-Carboranes with Stimuli Responsivity. Angew Chem Int Ed Engl 2020; 59:9841-9855. [PMID: 32009291 DOI: 10.1002/anie.201916666] [Citation(s) in RCA: 122] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Indexed: 12/20/2022]
Abstract
o-Carborane, a cluster compound containing boron and adjacent carbon atoms, displays intriguing luminescent properties. Recently, compounds containing o-carborane units were found to show suppressed aggregation-induced quenching and intense solid-state emission; they also show potential for the development of stimuli-responsive luminochromic materials. In this Minireview, we introduce three kinds of fundamental photochemical properties: aggregation-induced emission, twisted intramolecular charge transfer in crystals, and environment-sensitive excimer formation in solids. Based on these properties, several types of luminochromism, such as thermos-, vapo-, and mechanochromism, have been discovered. Based mainly on results from recent studies, we illustrate these mechanisms as well as unique luminescent behaviors of o-carborane derivatives.
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Affiliation(s)
- Junki Ochi
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
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7
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Feng G, Zhang GQ, Ding D. Design of superior phototheranostic agents guided by Jablonski diagrams. Chem Soc Rev 2020; 49:8179-8234. [DOI: 10.1039/d0cs00671h] [Citation(s) in RCA: 203] [Impact Index Per Article: 50.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review summarizes how Jablonski diagrams guide the design of advanced organic optical agents and improvement of disease phototheranostic efficacies.
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Affiliation(s)
- Guangxue Feng
- State Key Laboratory of Luminescent Materials and Devices
- Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates
- AIE Institute
- School of Materials Science and Engineering
- South China University of Technology
| | - Guo-Qiang Zhang
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials
- Ministry of Education, and College of Life Sciences
- Nankai University
- Tianjin 300071
| | - Dan Ding
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials
- Ministry of Education, and College of Life Sciences
- Nankai University
- Tianjin 300071
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8
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Nishino K, Tanaka K, Chujo Y. Tuning of Sensitivity in Thermochromic Luminescence by Regulating Molecular Rotation Based on Triphenylamine‐Substituted
o
‐Carboranes. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900537] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kenta Nishino
- Department of Polymer ChemistryGraduate School of EngineeringKyoto University Katsura, Nishikyo-ku, Kyoto 615-8510 Japan
| | - Kazuo Tanaka
- Department of Polymer ChemistryGraduate School of EngineeringKyoto University Katsura, Nishikyo-ku, Kyoto 615-8510 Japan
| | - Yoshiki Chujo
- Department of Polymer ChemistryGraduate School of EngineeringKyoto University Katsura, Nishikyo-ku, Kyoto 615-8510 Japan
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9
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Wei C, Zhu J, Zhang J, Deng Q, Mo D. Synthesis of Spirofluorenyl‐
β
‐Lactams through Cycloaddition and Ring Contraction from
N
‐Aryl Fluorenone Nitrones and Methylenecyclopropanes. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900523] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Cui Wei
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Jie‐Feng Zhu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Jin‐Qi Zhang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Qi Deng
- School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan 411201 People's Republic of China
| | - Dong‐Liang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004 People's Republic of China
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10
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Nishino K, Yamamoto H, Ochi J, Tanaka K, Chujo Y. Time‐Dependent Emission Enhancement of the Ethynylpyrene‐
o
‐Carborane Dyad and Its Application as a Luminescent Color Sensor for Evaluating Water Contents in Organic Solvents. Chem Asian J 2019; 14:1577-1581. [DOI: 10.1002/asia.201900396] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Indexed: 01/08/2023]
Affiliation(s)
- Kenta Nishino
- Department of Polymer ChemistryGraduate School of EngineeringKyoto University Katsura, Nishikyo-ku Kyoto 615–8510 Japan
| | - Hideki Yamamoto
- Department of Polymer ChemistryGraduate School of EngineeringKyoto University Katsura, Nishikyo-ku Kyoto 615–8510 Japan
| | - Junki Ochi
- Department of Polymer ChemistryGraduate School of EngineeringKyoto University Katsura, Nishikyo-ku Kyoto 615–8510 Japan
| | - Kazuo Tanaka
- Department of Polymer ChemistryGraduate School of EngineeringKyoto University Katsura, Nishikyo-ku Kyoto 615–8510 Japan
| | - Yoshiki Chujo
- Department of Polymer ChemistryGraduate School of EngineeringKyoto University Katsura, Nishikyo-ku Kyoto 615–8510 Japan
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11
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Ochi J, Tanaka K, Chujo Y. Improvement of Solid-State Excimer Emission of the Aryl-Ethynyl-o
-Carborane Skeleton by Acridine Introduction. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900212] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Junki Ochi
- Department of Polymer Chemistry; Graduate School of Engineering; Kyoto University; Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry; Graduate School of Engineering; Kyoto University; Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry; Graduate School of Engineering; Kyoto University; Katsura, Nishikyo-ku Kyoto 615-8510 Japan
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12
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Nishino K, Morisaki Y, Tanaka K, Chujo Y. Design of Thermochromic Luminescent Dyes Based on the Bis(
ortho
‐carborane)‐Substituted Benzobithiophene Structure. Chem Asian J 2018; 14:789-795. [DOI: 10.1002/asia.201801529] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 11/16/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Kenta Nishino
- Department of Polymer ChemistryGraduate School of EngineeringKyoto University Katsura Nishikyo-ku Kyoto 615-8510 Japan
| | - Yasuhiro Morisaki
- Department of Polymer ChemistryGraduate School of EngineeringKyoto University Katsura Nishikyo-ku Kyoto 615-8510 Japan
- Present address: Department of Applied Chemistry for EnvironmentSchool of Science and TechnologyKwansei Gakuin University 2-1 Gakuen Sanda Hyogo 669-1337 Japan
| | - Kazuo Tanaka
- Department of Polymer ChemistryGraduate School of EngineeringKyoto University Katsura Nishikyo-ku Kyoto 615-8510 Japan
| | - Yoshiki Chujo
- Department of Polymer ChemistryGraduate School of EngineeringKyoto University Katsura Nishikyo-ku Kyoto 615-8510 Japan
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13
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14
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Nishino K, Uemura K, Tanaka K, Morisaki Y, Chujo Y. Modulation of the cis
- and trans
-Conformations in Bis-o
-carborane Substituted Benzodithiophenes and Emission Enhancement Effect on Luminescent Efficiency by Solidification. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701641] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Kenta Nishino
- Department of Polymer Chemistry; Graduate School of Engineering; Kyoto University; Katsura, Nishikyo-ku 8510 Kyoto 615- Japan
| | - Kyoya Uemura
- Department of Polymer Chemistry; Graduate School of Engineering; Kyoto University; Katsura, Nishikyo-ku 8510 Kyoto 615- Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry; Graduate School of Engineering; Kyoto University; Katsura, Nishikyo-ku 8510 Kyoto 615- Japan
| | - Yasuhiro Morisaki
- Department of Polymer Chemistry; Graduate School of Engineering; Kyoto University; Katsura, Nishikyo-ku 8510 Kyoto 615- Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry; Graduate School of Engineering; Kyoto University; Katsura, Nishikyo-ku 8510 Kyoto 615- Japan
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15
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Wang Z, Wang T, Zhang C, Humphrey MG. N‐Donor/Fluorenyl
o
‐Carborane Fluorophores with Strong Crystallization‐Induced Emission. CHEMPHOTOCHEM 2018. [DOI: 10.1002/cptc.201700199] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Zhaojin Wang
- School of Chemical and Material Engineering Jiangnan University Wuxi 214122 Jiangsu Province P.R. China
| | - Tianyu Wang
- School of Chemical and Material Engineering Jiangnan University Wuxi 214122 Jiangsu Province P.R. China
| | - Chi Zhang
- School of Chemical and Material Engineering Jiangnan University Wuxi 214122 Jiangsu Province P.R. China
| | - Mark G. Humphrey
- School of Chemical and Material Engineering Jiangnan University Wuxi 214122 Jiangsu Province P.R. China
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
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16
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Nishino K, Uemura K, Tanaka K, Chujo Y. Dual emission via remote control of molecular rotation of o-carborane in the excited state by the distant substituents in tolane-modified dyads. NEW J CHEM 2018. [DOI: 10.1039/c7nj04283c] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dual-emissive properties are reported based on the tolane-o-carborane dyads with various substituents.
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Affiliation(s)
- Kenta Nishino
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Kyoya Uemura
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
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17
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Nishino K, Uemura K, Gon M, Tanaka K, Chujo Y. Enhancement of Aggregation-Induced Emission by Introducing Multiple o-Carborane Substitutions into Triphenylamine. Molecules 2017; 22:molecules22112009. [PMID: 29156590 PMCID: PMC6150215 DOI: 10.3390/molecules22112009] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 11/15/2017] [Accepted: 11/17/2017] [Indexed: 12/29/2022] Open
Abstract
The enhancement of aggregation-induced emission (AIE) is presented on the basis of the strategy for improving solid-state luminescence by employing multiple o-carborane substituents. We synthesized the modified triphenylamines with various numbers of o-carborane units and compared their optical properties. From the optical measurements, the emission bands from the twisted intramolecular charge transfer (TICT) state were obtained from the modified triphenylamines. It was notable that emission efficiencies of the multi-substituted triphenylamines including two or three o-carborane units were enhanced 6- to 8-fold compared to those of the mono-substituted triphenylamine. According to mechanistic studies, it was proposed that the single o-carborane substitution can load the AIE property via the TICT mechanism. It was revealed that the additional o-carborane units contribute to improving solid-state emission by suppressing aggregation-caused quenching (ACQ). Subsequently, intense AIEs were obtained. This paper presents a new role of the o-carborane substituent in the enhancement of AIEs.
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Affiliation(s)
- Kenta Nishino
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
| | - Kyoya Uemura
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
| | - Masayuki Gon
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
| | - Kazuo Tanaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
| | - Yoshiki Chujo
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
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